Scientists Develop Test Setup For New Way To Survive Reentry

Scientists at Tokyo Metropolitan University have developed a new test setup to evaluate magnetohydrodynamic (MHD) braking systems for spacecraft reentry. The setup, called MX-6.0, uses an 8-meter long expansion tube to simulate the shockwaves experienced by spacecraft during reentry. The test involves two 20mm modules with different magnetic characteristics, designed to assess how MHD systems perform under various conditions. Model 1, with a blunt cylinder and gentle nose curve, produced a magnetic flux density of 1.24 Tesla, 50% higher than the maximum output of a neodymium magnet. Model 2, based on the MUSES-C spacecraft, generated a 1.58 Tesla magnetic field. The test showed improvements in the glowing shock emission region and thickness of the models, indicating better aerodynamic drag and heat absorption. The test was successful in demonstrating the potential of MHD braking systems, though it was not intended for full-scale spacecraft use. The setup is part of wind tunnel testing and appears to perform well. The research highlights the importance of testing MHD systems in realistic conditions to improve their effectiveness for reusable rockets.

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